The Sealy Nostromo Active Latex 1400 pillow top pocket mattress offers a luxury mattress that contains 1400 pocketed springs in a king size mattress along with a 3cm layer of iinergetic latex. It also benefits from Sealy smart fibres in the messina stitched mattress cover to help the mattress stay cool, fresher and anti allergy. It also has tencel fibres bedded in to the top cover to help the mattress stay cooler during sleep the top cover is a rushton soft knitted cover for breathability . This mattress like all Sealy pocket and latex mattresses are non turnable and has a foam encapsulated wall around the edge of the mattress for greater stability.